期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 466, 期 -, 页码 368-375出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2018.07.051
关键词
Manganites; Magnetocaloric effect; Phenomenological model; Mean-field theory; Bean Rodbell model
In this work, we have used many theoretical models to simulate the magnetocaloric effect (MCE) in the charge ordered Pr0.5Sr0.5MnO3 (PSMO) manganite. This sample undergoes a first order antiferromagnetic charge-ordered (AFM/CO) to a ferromagnetic (FM) transition at T-CO similar to 165 K followed by a second order FM to paramagnetic (PM) transition at Curie temperature, T-C similar to 255 K. The Mean-field theory and the Bean-Rodbell model are called to study deeply the MCE in FM-PM transition. Based on the mean-field theory, we proposed a numerical approach to study the evolution of magnetization versus temperature for the first order AFM/CO - FM transition. By using a phenomenological model, we have compared theoretical and experimental MCE for the above two transitions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据